Heimeb



(No Model.)

J. HOFFMAN.

PENCIL SHARPENER.

ed Jan. 8, 1884.

.l.. 9 b l 9 2. 0. `N

jcction will catch in the slot, and thus wind up the spring; but when, on the other hand, the handle is turned in the wrong direction, the beveled face of the projection will meet the slot, and consequently the end ot' the spring will ride over without engaging the projection.

The operation is as follows: The spring is first wound up by turning the handle in the direction of the arrow, and, while the handle is still held, the pencil w is forced into the bite of the rolls, as indicated in Fig. 1. The handle being then released, the spring asserts it` self, and, by rotating the rolls, carries forward the pencil into the Sharpener or cutter. The crank E is then rapidly turned, with the effect of cutting` and sharpening the end of the pencil, the latter being automatically fed forward in proportion as it is cut away, until it -is properly sharpened. Vhen this has been done, the pencil is withdrawn by turning the crank H again in the direction of the arrow, thus causing the rolls to rotate against the stress ofthe spri ng. After the pencil is withdrawnunless another one is to be introducedthe spring is allowed to unwind by permitting` the handle H to revolve slowly. If at any time the feed-spring should fail to feed fast enough, its action can be assisted by gently turning` the crank H in the proper direction to advance the pencil.

Having described my improvements and the preferred embodiment of the same, what I claim as new and of my own invention isl. In a pencil-Sharpener, the combination, with the cutter, oiautomatic spring-controlled pencil-feed mechanism7 substantially as hereinbefore set forth.

2. The combination of the pencil sharpening or cutting mechanism propel', the feedrolls, and the spring, arranged and operating to rotate the same in the direction requisite to advance the pencil held between them toward the cutting mechanism, substantially as hereinbefore set forth. i

3. The combination of pencil -sharpening mechanism, pencil-feed rolls, held together with yielding pressure, and the rollpropel ling spring, as and for the purposes hereinbefore set forth.

4. The combination of the pencil-sharpenilignneclianism, the feed-rolls, the crank or handle H, and the spring l, under the arrangement and for operation substantially as hereinbefore set forth.

In testimony whereof Ihave hereunto set my hand this 24th day of October, 1883.

JOSEPH HOFFMAN.

\Vitnesses:

C. S. BRAIs'rED, Jon W. SwAiNn. 

